fix: sign in view ui enhancements

Author: RawanMatar89

auth/src/main/java/org/openedx/auth/presentation/signin/compose/SignInView.kt

@@ -304,16 +304,20 @@ private fun AuthForm(
     if (state.isSSOLoginEnabled){
         Spacer(modifier = Modifier.height(18.dp))
         if (state.isLoginRegistrationFormEnabled){
+            HorizontalLine()
+            Spacer(modifier = Modifier.height(18.dp))
+
             Text(
-                modifier = Modifier.testTag("txt_sso_header"),
+                modifier = Modifier
+                    .testTag("txt_sso_header")
+                    .padding(top = 4.dp)
+                    .fillMaxWidth(),
                 text = stringResource(id = coreR.string.core_sign_in_sso_heading),
                 color = MaterialTheme.appColors.textPrimary,
                 style = MaterialTheme.appTypography.headlineSmall,
-                textAlign = TextAlign.Center
+                textAlign = TextAlign.Center,
             )
             Spacer(modifier = Modifier.height(18.dp))
-            HorizontalLine()
-            Spacer(modifier = Modifier.height(18.dp))
             Text(
                 modifier = Modifier
                     .testTag("txt_sso_login_title")

core/src/main/res/values/strings.xml

@@ -138,7 +138,7 @@
     <string name="core_course_container_nav_more">More</string>
     <string name="core_course_container_nav_dates" tools:ignore="MissingTranslation">Dates</string>
     <string name="core_sso_sign_in">Sign in with SSO</string>
-    <string name="core_sign_in_sso_heading">Start today to build your career with confidence</string>
+    <string name="core_sign_in_sso_heading">OR</string>
     <string name="core_sign_in_sso_login_title">Sign in</string>
     <string name="core_sign_in_sso_login_subtitle">Sign in through the national unified sign-on service</string>
 </resources>